Kangaroos aren't the only animals who have been forced to face human beings in combat. We take a look at the centuries-old history of men stepping into the ring – or cage – to fight bears.
"If they've had to kill someone, they later often start doubting that their actions did anything to protect innocent people. I can't take that feeling away, but I can help them cope with it."
Every year there's a medieval combat tournament that takes place in a castle in Portugal; that means swords, full body armour, and shields.
The Euro Big Game is the manliest fake war there is.
We talked to the guys behind the viral marketing stunt.
"Anyone who kills friends of mine has made himself my target. I won't stop until ISIS is destroyed."
Though you might think people who could kill without remorse would make perfect fighters, in reality it can be difficult to make it as a soldier without a conscience.
What does a soldier do when he's sent home from combat, still young and lascivious, but no longer able to feel his dick? He buys a sex toy from Tom Stewart, the owner of Sportsheets.
Secretary of Defence Chuck Hagel is dropping hints that the time has come.
They're falling apart at the seams.
"Yeah, they can still cook while they're out there."